用法：$new_password=return_password（）;

示例：生成密码：2X5bjj2z，ERgid62Y，p2sHtDPv

*/

functionreturn_password(){

//setpasswordlength

$pw_length=8;

//setASCIIrangeforrandomcharactergeneration

$low_ascii_bound=50;//"2"

$upper_ascii_bound=122;//"z"

//开源代码phpfensi.com

//Excludespecialcharactersandsomeconfusingalphanumerics

排除一些特殊字符和字母数字混淆

//o,O,0,I,1,letc

$notuse=array(58,59,60,61,62,63,64,73,79,91,92,93,94,95,96,108,111);

while($i<$pw_length){

mt_srand((double)microtime()*1000000);

//randomlimitswithinASCIItable

$randnum=mt_rand($low_ascii_bound,$top_ascii_bound);

if(!in_array($randnum,$notuse)){

$password=$password.chr($randnum);

$i++;

}

}

return$password;

}